US6830578B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trocar
Assignee: CooperSurgical Inc
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Filing: 2001-11-26
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Granted: 2004-12-14
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Expires: 2021-11-26
Abstract
Abstract A trocar is disclosed which includes a housing assembly and a cannula assembly attached to the housing assembly to define an axial bore therethrough. The trocar further includes an obturator assembly which slidably engages the axial bore defined by the cannula assembly. The obturator assembly includes a shaft having a piercing end for insertion into a patient and a handling end for gripping by a surgeon. Attached to the piercing end of the shaft is a piercing tip having an upper face and a lower face which taper away from the shaft to form a non-conical, blunt head. The piercing tip further includes wing elements located on opposite sides of the piercing tip between the upper face and lower face. These wing elements have a lateral edges.
Inventors
- 👤 Peter T. O'Heeron
- 👤 Patrick C. Newlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:13
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/32; A61B2017/320044; A61B2017/3454; A61B2017/3456; A61B2017/346
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
A trocar, comprising: (a.) a housing assembly; (b.) a cannula assembly attached to the housing assembly and defining an axial bore therethrough; and (c.) an obturator assembly for sliding engagement through the axial bore defined by the cannula assembly, said obturator assembly comprising a shaft having a piercing end for insertion into a patient and a piercing tip removably connected to the piercing end of the shaft, said piercing tip comprising: (i.) a body having an upper face and a lower face tapering away from the shaft; and (ii.) an insert blade residing partially within the body of the piercing tip and protruding outward away from the body of the piercing tip, said insert blade comprising a non-conical, blunt head and two wing elements having lateral edges located 180 degrees apart between the upper face and lower face of the body.
Claim 2
Dependent Claim
141 words
A trocar, comprising: (a.) a housing assembly; (b.) a cannula assembly attached to the housing assembly and defining an axial bore therethrough; and (c.) an obturator assembly for sliding engagement through the axial bore defined by the cannula assembly, said obturator assembly comprising a shaft having a piercing end for insertion into a patient and a piercing tip removably connected to the piercing end of the shaft, said piercing tip comprising: (i.) a body having an upper face and a lower face tapering away from the shaft; and (ii.) an insert blade residing partially within the body of the piercing tip and protruding outward away from the body of the piercing tip, said insert blade comprising a non-conical, blunt head and two wing elements having lateral edges located 180 degrees apart between the upper face and lower face of the body.
Claim 3
Dependent Claim
14 words
The trocar of claim 1 , wherein the insert blade is fabricated from metal.
Claim 4
Dependent Claim
14 words
The trocar of claim 1 , wherein the insert blade is fabricated from plastic.
Claim 5
Dependent Claim
16 words
The trocar of claim 1 , wherein said shaft further comprises a handling end for gripping.
Claim 6
Dependent Claim
19 words
The trocar of claim 4 , further comprising an arcuate-shaped cap attached to the handling end of the shaft.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-12-14 | 2008-06-14 | 2008-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-12-14 | 2012-06-14 | 2012-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-12-14 | 2016-06-14 | 2016-12-14 | $7700.00 | Window Closed / Lapsed |